Great question! We have a whole page about this here (https://hightouch.io/blog/hightouch-vs-census/).

But the TLDR is that Hightouch has more developer focused features (like a live debugger, alerting, version control with Git, and more here: https://hightouch.io/data-features/), a dedicated UI for business users to visually filter models (called Hightouch Audiences), more transparent pricing, as well as more integrations (70+) that are also deeper and customized for each tool.